Postfix legacy releases 2.10.3, 2.9.9, 2.8.17, and 2.7.16

Postfix legacy releases 2.10.3, 2.9.9, 2.8.17, and 2.7.16 are
available. They contain fixes and workarounds that are also part
of Postfix 2.11. This is the final update for Postfix 2.7.

Postfix 2.10.3, 2.9.9, and 2.8.17:

Future proofing against OpenSSL library API changes. When
support for a bug workaround is removed from OpenSSL, the corresponding
named bit in tls_disable_workarounds will be ignored instead of
causing existing Postfix configurations to fail.